Ferroelectric to paraelectric phase transition mechanism in poled PVDF-TrFE copolymer films

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • S. Misture
  • N. C. Osti
  • N. Jalarvo
  • S. O. Diallo
  • E. Mamontov

Detail(s)

Original languageEnglish
Article number174103
Journal / PublicationPhysical Review B
Volume96
Issue number17
Publication statusPublished - 3 Nov 2017

Abstract

Direct experimental insights into the structural and dynamical mechanisms for ferroelectric β to paraelectric α phase transition in a poled PVDF-TrFE copolymer is obtained from in situ x-ray diffraction and quasielastic neutron scattering measurements at high temperatures. It is observed that the β-to-α phase transition proceeds through two energetically distinct processes, which are identified here as the nucleation and growth of an intermediate γ phase with random skew linkages followed by a γ-to-α transition. The two energetically distinct microscopic processes can explain the stages of evolution for β-to-α phase transition observed from heat flow measurements.

Citation Format(s)

Ferroelectric to paraelectric phase transition mechanism in poled PVDF-TrFE copolymer films. / Pramanick, A.; Misture, S.; Osti, N. C.; Jalarvo, N.; Diallo, S. O.; Mamontov, E.

In: Physical Review B, Vol. 96, No. 17, 174103, 03.11.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review